Examples of import and export data operations implemented by CI framework (CodeIgniter)

This article mainly introduces the import and export data operations implemented by the CI framework (CodeIgniter), and analyzes the related operating techniques of data import and export using PHPExcel in the CodeIgniter framework libraries in the form of examples. Friends in need can refer to the following

The example in this article describes the import and export data operations implemented by the CI framework (CodeIgniter). Share it with everyone for your reference, the details are as follows:

Reference the PHPExcel class (phpexcel.php) in libraries

public function excel_put(){
  //先做一个文件上传，保存文件
  $path=$_FILES['file'];
  $filePath = "uploads/".$path["name"];
  move_uploaded_file($path["tmp_name"],$filePath);
  //$data=array('B'=>'name','C'=>'pwd','D'=>'money1','E'=>'salt');
  $data=array('B'=>'name','C'=>'pid');
  $tablename='city2';//表名字
  $this->excel_fileput($filePath,$data,$tablename);
}

private function excel_fileput($filePath,$data,$tablename){
  $this->load->library("phpexcel");//ci框架中引入excel类
  $PHPExcel = new PHPExcel();
  $PHPReader = new PHPExcel_Reader_Excel2007();
  if(!$PHPReader->canRead($filePath)){
    $PHPReader = new PHPExcel_Reader_Excel5();
    if(!$PHPReader->canRead($filePath)){
      echo 'no Excel';
      return ;
    }
  }
  // 加载excel文件
  $PHPExcel = $PHPReader->load($filePath);
  // 读取excel文件中的第一个工作表
  $currentSheet = $PHPExcel->getSheet(0);
  // 取得最大的列号
  $allColumn = $currentSheet->getHighestColumn();
  // 取得一共有多少行
  $allRow = $currentSheet->getHighestRow();
  // 从第二行开始输出，因为excel表中第一行为列名
  for($currentRow = 2;$currentRow <= $allRow;$currentRow++){
    /**从第A列开始输出*/
    //echo $allColumn;
    for($currentColumn= &#39;A&#39;;$currentColumn<= $allColumn; $currentColumn++){
      $val = $currentSheet->getCellByColumnAndRow(ord($currentColumn) - 65,$currentRow)->getValue();
      //print_r($val);
      //die;
      if($currentColumn == &#39;A&#39;)
      {
        //echo $val."\t";
      }else if($currentColumn <= $allColumn){
        $data1[$currentColumn]=$val;
      }
    }
    foreach($data as $key=>$val){
      $data2[$val]=$data1[$key];
    }
    $this->db->insert($tablename,$data2);
    //print_r($data2);
    //echo "</br>";
  }
  //echo "\n";
  echo "导入成功";
}

Export data:

public function excel_out(){
  header("Content-type:text/html");
  header("Content-Disposition:attachment;filename=123.xls");
  $array=$this->db->get("city")->result_array();
  $str="id\t"."name\t"."pid\n";
  foreach($array as $val){
    $str.=$val['id']."\t".$val['name']."\t".$val['pid']."\n";
  }
  echo $str;
}

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